Paper on the impact of dropwindsondes from the Global Hawk on forecasts released online in Monthly Weather Review

Summary:  A drone, what we call an unmanned aircraft system, can collect data in tropical cyclones (TCs) to improve forecasts.  Scientists have used the Global Hawk drone that can fly at an altitude of up to 60,000 feet for over 24 hours at a time since 2010. The Global Hawk releases dropwindsondes that measure wind, …

Paper on how small-scale changes in winds in hurricanes impact hurricane forecasts published in Weather and Forecasting

Summary: Forecasters and researchers use the Hurricane Weather Research and Forecasting (HWRF) model to forecast where a hurricane will go, how strong and large it will be, and where the strongest winds will be. Wind in hurricanes are different over very short distances like 100 m, or the length of a football field, what is …

Paper on updrafts in hurricanes and how they relate to intensity changes published in Monthly Weather Review

Summary:  NOAA Hurricane Hunter aircraft have a Doppler radar that measures wind through the entire hurricane.  We analyzed these radar data collected in many hurricanes since 2004.  Previous studies found that the location of the fastest upward moving air (what we call updrafts) may tell us how strong the storm will be a few hours …

15th anniversary of publication of seminal work on wind profiles in the tropical cyclone eyewall from dropwindsondes

Starting in 1996, NOAA phased out use of the obsolete Omega DropWindsondes (ODW) in favor of the Global Positioning Satellite (GPS) Dropwindsondes.  In addition to being more accurate due to the superior navigation system, this next-generation sonde was also more moisture tolerant.  ODWs would fail in they were launched in areas of heavy rain, but …

Paper on the best way to input very large numbers of observations into weather models published in Monthly Weather Review

Summary: Almost all weather forecasts for times longer than a few hours in the future are made using complicated computer apps working together on the largest computers. This is known as numerical weather prediction, or NWP for short. One of the most important NWP apps takes all kinds of data and mixes them together to …

Jason Dunion wins 2018 Banner I. Miller Award

HRD's Jason Dunion, along with colleagues Chris Thorncroft, and Chris Velden, were presented with the prestigious Banner I. Miller Award at the AMS's 33rd Hurricane and Tropical Meteorology Conference for their paper "The tropical cyclone diurnal cycle of mature hurricanes".  The work was cited for "identifying a fundamental process in tropical cyclones and elegantly defining …